BoilerFaultCodesWhat the manual says
Manufacturer manual305:Eng under current: Engine connectivity test failed. This test lasts for at most one minute following the start of engine operation. Measured current must be greater than 100 mA for 10 seconds to pass the test.
Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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